Heating, spinning and thickening method for annular outer edge of round plate

Abstract

The invention discloses a heating, spinning and thickening method for the annular outer edge of a round plate. The method comprises the step of heating the annular outer edge of the round plate and the step of carrying out spinning, thickening and integral forming on the annular outer edge of the round plate. In the heating step, a heating spray gun is used for heating the annular outer edge of the round plate in the whole forming process, and the temperature of the annular outer edge of the round plate is kept above the austenite transformation temperature; in the spinning, thickening and integral forming step, a spinning wheel with an annular rolling groove is used for performing radial feeding and extruding on the annular outer edge of the round plate, and therefore single-pass and large-thickening-ratio thickening can be achieved; and the heating spray gun and the spinning wheel are matched with each other so as to constantly thicken the heated annular outer edge of the round plate. By means of cooperation of the heating step and the spinning and thickening step, the metal plasticity is improved, metal flowing is facilitated, and the gradual thickening of the annular edge is achieved while a round plate is heated. The tonnage of a spinning machine needed by forming is small, a spinning wheel die is simple, large pressure machines or forging dies are not needed, and the manufacturing cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of thickening the outer edge of a circular sheet material, and more specifically, relates to a heating spinning thickening method for the annular outer edge of a circular sheet material. Background technique [0002] With the development of traditional manufacturing industries such as machinery and automobiles, as well as the increasing social demand for energy saving, emission reduction, and lightweight production, parts with different thicknesses can meet the needs of customization while saving materials and energy. use. For example, thin-spoke and thick-rim disc-shaped parts, whose thick-walled annular peripheral wall is convenient for milling parts with sufficient strength and tooth thickness; at the same time, because of its thin web, it can effectively save materials and reduce the weight of parts during manufacturing. Particularly suitable for manufacturing auto parts, such as engine-driven discs. [0003]...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for thickening the ring outer edge of a circular plate by heating and spinning, in which, in combination with the characteristics of the annular outer edge of the circular sheet, heating is used to increase the thickness of the metal. Plasticity, which is beneficial to the advantages of metal flow forming, solves the problems of large forming force and too many forming passes in the existing method of partial thickening of circular sheet metal, and is suitable for the blanking of flywheel ring gear, belt pulley and other disc shapes or thickening of the outer edge of ring parts

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